Cooking stove or range.



.No. 888,163. PATENTED MAY 19, 1908. c. R. HANSON. 0001mm STOVE 0R RANGE.

APPLIOATIUN FILED JAN. 21, 1908.

I 31 wuwtoz Lshan/flasmusflamsan att oznaq THI NORRII PITEHS c0. WASHINGTON. D- C UNITED STATES PATENT OFFICE.

CHRISTIAN RASMUS HANSON, OF WATERLOO, IOWA.

COOKING STOVE OR RANGE.

Application filed January 21, 1908.

T 0 all whom it may concern:

Be it known that I, CHRISTIAN RASMUS HANsoN, a citizen of the United States, residing at Waterloo, in the county of Blackhawk and State of Iowa, have invented new and useful Im rovements in Cooking Stoves or Ranges, of which the following is a specification.

This invention relates to improvements in cooking stoves or ranges, the main object of the invention being to provide a construction whereby the greater proportion of the products of combustion will be consumed, thus rendering the stove practically smokeless, and also one wherein the steam and vapors arising from the utensils on the stove will be taken care of and discharged, thus preventing offensive cooking odors from being transmitted through the house.

Another object of the invention is to provide a novel construction of perforated warming shelf and draft devices associated therewith, whereby the vapors and odors may be discharged above or below the shelf, together with a damper controlling the perforations in the shelf, whereby food supported upon the shelf may be warmed or not at will.

With these and other objects in view, the invention consists of the features of construction, combination and arrangement of parts hereinafter fully described and claimed, reference being had to the accompanying drawing, in which Figure 1 is a front elevation of the improved cooking stove or range. Fig. -2 is a side elevation and partial vertical section, such section being taken through the hood and its frame and the rear portion of the body of the stove. Fig. 3 is a horizontal section on line 3-3 of Fig. 1.

Referring to the drawings, the numeral 1 represents the body of the stove; 2, the top plate thereof provided with the usual utensil receiving openings, not shown; 3, the combustion chamber; 4, the grated fire-box; 6, the ash-pit; and 7, a warming chamber or closet disposed at the bottom of the body below the ash-pit.

Disposed to overhang the top 2 of the stove is a gathering hood 8, adapted to catch and confine the vapors arising from the utensils supported by said top. The hood extends from a point in line with the rear of the stove forwardly to a position in line with the center of the stove, and comprises a top wall Specification of Letters Patent.

Patented May 19, 1908.

Serial No. 411,942.

9, a rear wall 10, preferably constituting a continuation of the rear wall of the stove body, and side walls 11, which walls may be of any preferred contour.

Arranged upon the side walls 11 at a suitable point below the top wall 9 are angle brackets 12, above which are arranged in spaced relation the ends of a stationary perforated shelf 13 extending entirely across between the side walls 11 and of a width to cover the space between the front edges of said walls and the back of the stove. This shelf is designed in practice to support table china-ware and utensils containing food to be warmed, and is perforated to permit of the normal free upward passage therethrough into the space between the same and the top of the hood of the vapors arising from the utensils on the top 2, in order to admit of the discharge of such vapors in the manner hereinafter described. The ends of the shelf have upturned flanges 14 riveted or otherwise secured to the walls 11, and below the shelf is arranged a sliding damper plate 15 movable at its ends in the spaces between the shelf and the supporting brackets 12, thus adapting said plate to be forced inward to close the perforations in the shelf or drawn outward to hold said perforations open for the passage of the vapors. The function of the damper plate 15 is to enable the low of hot air and vapors to be cut off from passage through and above the perforated shelf, so that the articles may be placed u on the shelf without being warmed, as wel as to provide for the retention and collection of the vapors below the shelf when the latter supports a plurality of utensils fully or practically closing the perforations therein so that but a small proportion of the vapors can pass through the shelf, by which all of the vapors may be gathered in a non-dissipated condition and discharged from a point below the shelf under such conditions. A supplemental hood 16 is pivotally mounted upon the underside of the damper plate 15 adjacent the forward edge thereof and is curved to project forwardly and downwardly when extended for use to prevent the vapors from passing upward beyond the hood and to conduct and confine the same within the portion of the hood below the perforated shelf. This supplemental hood is provided with a contact ortion 17 to bear against the edge of the pTate to limit its outward swinging movement and is adapted to be swung downwardly and inwardly to a folded position beneath said plate when its use is not desired, the frictional engagement between the parts of the pivotal connections serving to retain such supplemental hood in any position to j V flue plate or strip 25 is formed above the which it may be adjusted.

In theordinary construction of stove or range, the hot air and products of combustion pass from the fire-box into the comb-ustion chamber and thence into a space between the walls of the stove and the top, sides and rear end of the oven, and thence exhaust directly through the outlet pipe to the exterior. As a consequence, the stove is liable to smoke under well-known conditions, and a proportion of the available products of combustion is lost as fuel. One of the purposes of the present invention is to obviate this objection and provide means whereby the unconsumed products of combustion will be drawn with the vapors back into the body of the stove, to partially consume in the combustion chamber, and the residue allowed to exhaust through the outlet pipe to the atmosphere. The stove pipe or outlet pipe 18 is in communication at its lower end in the usual manner with the upper rear portion of the combustion chamber 3 and may be, as shown, divided by a vertical partition 9, separating it to form two passages to effect a more perfect exhaust of the odors and unavoidable products of combustion from opposite sides of the center of the stove.

Arranged upon each side of the outlet pipe 18, which is located at a point centrally between the sides of the stove, is a front flue 2O extending upwardly from the top of the stove to the wall 9, and preferably formed by a bowed or channeled plate 20 of sheet metal flanged at its ends and sides for the passage of suitable fastenings to secure the same to the top 2 of the stove, the wall 10 and the wall 9. Each of these front flues communicates through a vertical slot or opening 21 formed in thewall 10 with a rear flue 22, formed by a somewhat smaller metallic strip 22 fastened to the rear surface of the wall 10 and extending downwardly upon and secured to the rear surface of the back wall of the stove. The passage 21 extends from a point about in line with the top 2 to a point just be low the hood wall 9, while the flue 20 communicates at its lower end with the upper rear portion of the combustion chamber 3 and the flue 22 communicates at its lower end through an opening 24 in the back wall of the stove with the ash-pit 6, a guard or shield 25 being suitably arranged with relation to said opening 24 to prevent the same from being c ogged or closed by ashes. It will be thus seen that two sets of flues 20 and 22 are provided, one on each side of the outlet pipe 18, and that the flues 20 at the opposite sides are in communication at their lower ends with the combustion chamber and throughout their length with the co-acting rear flues 22, which are in communication at their lower ends with the opposite sides of the as'hpit.

In the front wall of the pipe 18 and in each shelf 13 a draft opening 26 adapted to be closed by a pivoted damper 27, having an operating handle 28. Also formed in said pipe and flue walls below the shelf are draft open ings 26 adapted to be closed by similar dampers 27 having operating handles 28. It will thus be seen that the pipe and flues are provided with draft openings communicating with the hood above and below the shelf, such openings being controlled by independent dampers.

In the normal use of the stove, a draft is created upward through the flrebox, combustion chamber and outlet pipe, by which, when the dampers controlling the openings in the flues 22 are opened, drafts will be created by the escaping products of combustion and hot air passing from the combustion space into the outlet pipe through the said flues to draw the collected vapors in the hood rearwardly into the flues and thence downwardly through the rear flues 22 and finally through the openings 24 into the ash-pit, and thence through the combustion chamber to and through the outlet pipe. Hence, when one or more of the flue dampers are opened, the vapors and more or less pure air will be drawn into the vapor flues, together with a large proportion of the unconsumed products of combustion and drained from the combustion chamber 3 through the flues 20 and passages 21 into the rear flues 22, and such mixture will pass downward through said flues 22 and flow through the openings 24 into the ash-pit and thence upward through the grate into the fire-box. The unconsumed products of combustion, admixed with oxygen, will therefore be subjected to the action of the flames in the fire-box and consumed, together with all of the available portions of the vapor which can be consumed. By this means the greater amount of the products of combustion usually allowed to waste through the outlet pipe will be retained and consumed, thus increasing the intensity of the heat and reducing the amount of fuel to keep the stove fed. In such operation also the vapors col lected within the hood will be withdrawn and all obnoxious odors destroyed or dissipated, thus preventing the same from being diffused throughout the rooms of the house. The hot air and portions of the products of combustion which are not available for fuel will, it is apparent, flnally exhaust from the combustion space to the atmosphere through the outlet pipe 18.

It will be seen from the foregoing descrip tion that the draft through the auxiliary flues may be regulated with certainty, and provision for the exhaust of a greater or less amount of vapor, as occasion may require, is secured in a simple manner. If it be desired to allow the gathered vapor in the hood to exhaust directly through the outlet pipe without passing through the dues, this operation may be accomplished by simply opening one or both of the dampers controlling the openings in said pipe.

WVhen it'is desired to collect the vapors in the hood wholly below the perforated shelf 13, so as to allow food or articles to be supported on said shelf without being warmed, the damper 15 is slid inward, thus cutting off the upward flow of the hot air and vapor through the shelf and confining the same in the hood below the shelf, so that upon opening one or more of the lower set of dampers the vapors may be allowed to exhaust directly through the stove pipe or partially through the same and through either one or both of the flues before finally passing through the smoke pipe to the atmosphere. When it is desired to warm the articles placed upon the shelf, the damper 1.5 may be drawn outward by grasping and utilizing the supplementary hood 16 as a handle, so that the hot air and vapors will flow upward through the shelf and heat the articles supported thereon. The gathered vapor in the upper portion of the hood above the shelf may then be exhausted by opening one or more of the dampers 27. When the vapors are being rapidly generated and a large proportion of the surface of the perforated shelf is covered by articles resting thereon, which interfere with the upward flow therethrough of the vapors, it will be understood that the vapors gathered in the hood both above and below the shelf may be exhausted by opening both sets of dampers 27 and 27.

A stove constructed in accordance with my invention possesses superior advantages in many respects obvious to those skilled in the art, and also provides a means by which the unconsumed products of combustion may be partially saved and utilized as fuel, thus rendering the stove practically smokeless in operation and at the same time increasing its heating power and reducing the amount of fuel necessary to keep the same in operation.

Having thus fully described the invention, what is claimed as new is 1. A stove or range comprising a body, a hood supported by and overhanging the top of the body, a perforated transverse shelf carried by the hood and separating the same into upper and lower vapor gathering por tions, and means for discharging the vapors from either or both of such gathering portions through the circulatory passages of the stove.

2. A stove or range comprising a body, a hood supported by and overhanging the top thereof, a perforated transverse shelf disposed within the hood and separating the same into upper and lower gathering portions, a damper plate arranged for sliding movement to control the openings in the shelf, and means for discharging the gathered vapors from either or both of such gathering portions of the hood through the circulatory passages of the stove.

3. A stove or range comprising a body, a hood supported by and overhanging the to of the body, a transverse perforated she f carried by the hood and dividing the same to form upper and lower gathering portions, a sliding damper plate controlling the openings in said shelf, a supplementary hood carried by the damper plate, and means for exhausting the vapors from either or both of such gathering portions through the circulatory passages of the stove.

4. A stove or range provided with an outlet pipe communicating with the combustion space thereof, a hood supported by and overhanging the top of the stove, a front flue provided with a draft opening communicating with the hood and in communication at its lower end with the combustion space, a rear flue in communication at its upper end with the front flue and at its lower end with the ash-pit of the stove, and a damper controlling the draft opening in the front flue.

5. A stove comprising a body provided with an outlet pipe communicating with the combustion chamber thereof, a hood supported by and overhanging the top of the stove, front vapor flues arranged 011 opposite sides of the outlet pipe and provided with draft openings communicating with the hood and communicating at their lower ends with the combustion chamber, and rear flues in communication at their upper ends with said front fines and at their lower ends with the ash-pit of the stove.

6. A stove or range comprising a body, a gathering hood supported by and overhanging the top thereof, a smoke pipe disposed centrally at the rear of the hood and communicating at its lower end with the combustion chamber of the body, front flues arranged on opposite sides of said smoke pipe and in communication at their lower ends with the combustion chamber, said pipe and flues having draft openings communicating with the hood, and rear flues communicating at their upper ends with the front flues and at their lower ends with the ash-pit of the body.

7. A stove or range comprising a body, a hood supported by and overhanging the top thereof, a perforated transverse shelf carried by the hood and separating the same to form upper and lower gathering portions, a damper for controlling the perforations in said shelf, a smoke pipe disposed centrally at the rear of the hood and communicating at its lower end with the combustion chamber of the opening at their lower ends into the body of body,front flues disposed on opposite sides of the stove below the combustion chamber. 10

said pipe and communicating at their lower In testimony whereof I afliX my signature ends with the combustion chamber, said pipe in presence of two witnesses.

and fines being provided with draft openings CHRISTIAN RASMUS HANSON.

communicating with the hood above and be- Witnesses: low the shelf, and rear flues communicating WV. F. CURTIss,

at their upper ends With saidfront fiues and O. F. BERRY. 

